If I remembered correctly:
The guard in the starting town says “Enjoy your trip”.
The one in the snowy mountain says something like someone from Adventurer’s Guild hired him to guard the mountain.
Both of them refused to let me in.
There’s currently no one mentioning “sensor orb”.
The last bit of information I got was that the curse on Emi is not documented in the library, but there’s a fairytale mentioning a similar effect, and Ren mentioned that they have to find the origin of the tale.